Rapid Elemental Analysis of Aerosols Using Atmospheric Glow Discharge Optical Emission Spectroscopy.

ABSTRACT: A new, low-cost approach based on the application of atmospheric radio frequency glow discharge (rf-GD) optical emission spectroscopy (OES) has been developed for near real-time measurement of multielemental concentration in airborne particulate phase. This method involves deposition of aerosol particles on the tip of a cathode in a coaxial microelectrode system, followed by ablation, atomization, and excitation of the particulate matter using the rf-GD. The resulting atomic emissions are recorded using a spectrometer for elemental identification and quantification. The glow discharge plasma in our system was characterized by measuring spatially resolved gas temperatures (378-1438 K) and electron densities (2-5 × 1014 cm-3). Spatial analysis of the spectral features showed that the excitat

SUBMITTER: Zheng L 

PROVIDER: S-EPMC5555147 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature